The Resurrection: Certainty of, Proved by the Resurrection of Christ
Source: TTT
1 Corinthians 15:12–20
But if it is preached that Christ has been raised from the dead, how can some of you say that there is no resurrection of the dead? / If there is no resurrection of the dead, then not even Christ has been raised. / And if Christ has not been raised, our preaching is worthless, and so is your faith.